{"title":"fe掺杂作为BCZT陶瓷相变相界的通用移相器","authors":"Wenwei Ge, Mingze Gao, Chen Wu, Yu Fang, Changyi Liu, Hongwei Zhao, Hongming Yuan","doi":"10.1007/s10832-021-00265-4","DOIUrl":null,"url":null,"abstract":"<div><p><i>y</i> mol% Fe-doped Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>—<i>x</i> mol%(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (abbreviated as <i>y</i>Fe:BCZT<i>x</i>) ferroelectric ceramics with <i>y</i> = 0, 0.375, 0.75, and 1.5 across the morphotropic phase boundary (MPB) with <i>x</i> = 44 and 56 were fabricated via conventional solid state reaction methods. Fe incorporated into the lattice and all the <i>y</i>Fe:BCZT<i>x</i> ceramics showed pure perovskite structure. Fe-doping can significantly reduce the grain sizes and shift the tetragonal-cubic phase boundary toward lower temperature for all the investigated compositions across the MPB. A moderate enhancement of frequency dispersion on the dielectric constant was observed. The temperature dependent dielectric constant was analyzed according to modified Curie–Weiss law and the diffuse factor increased with increasing Fe-doping content. Relaxor-like slim polarization–electric field (P-E) loops were obtained for all BCZT<i>x</i> ceramics after Fe-doping. 1.5Fe:BCZT<i>x</i> ceramics shows almost hysteresis free P-E loops without obvious fatigue behavior after 10,000 cycles. The recoverable energy storage efficiency was significantly enhanced in 1.5Fe:BCZT<i>x</i> ceramics with good temperature stability. Our results indicate Fe-doping can be used as a universal phase boundary shifter and to increase energy storage efficiency for BCZT ceramics.\n</p></div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"47 3","pages":"67 - 78"},"PeriodicalIF":1.7000,"publicationDate":"2021-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Fe-doping as a universal phase boundary shifter for BCZT ceramics across the morphotropic phase boundary\",\"authors\":\"Wenwei Ge, Mingze Gao, Chen Wu, Yu Fang, Changyi Liu, Hongwei Zhao, Hongming Yuan\",\"doi\":\"10.1007/s10832-021-00265-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><i>y</i> mol% Fe-doped Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>—<i>x</i> mol%(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (abbreviated as <i>y</i>Fe:BCZT<i>x</i>) ferroelectric ceramics with <i>y</i> = 0, 0.375, 0.75, and 1.5 across the morphotropic phase boundary (MPB) with <i>x</i> = 44 and 56 were fabricated via conventional solid state reaction methods. Fe incorporated into the lattice and all the <i>y</i>Fe:BCZT<i>x</i> ceramics showed pure perovskite structure. Fe-doping can significantly reduce the grain sizes and shift the tetragonal-cubic phase boundary toward lower temperature for all the investigated compositions across the MPB. A moderate enhancement of frequency dispersion on the dielectric constant was observed. The temperature dependent dielectric constant was analyzed according to modified Curie–Weiss law and the diffuse factor increased with increasing Fe-doping content. Relaxor-like slim polarization–electric field (P-E) loops were obtained for all BCZT<i>x</i> ceramics after Fe-doping. 1.5Fe:BCZT<i>x</i> ceramics shows almost hysteresis free P-E loops without obvious fatigue behavior after 10,000 cycles. The recoverable energy storage efficiency was significantly enhanced in 1.5Fe:BCZT<i>x</i> ceramics with good temperature stability. Our results indicate Fe-doping can be used as a universal phase boundary shifter and to increase energy storage efficiency for BCZT ceramics.\\n</p></div>\",\"PeriodicalId\":625,\"journal\":{\"name\":\"Journal of Electroceramics\",\"volume\":\"47 3\",\"pages\":\"67 - 78\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2021-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Electroceramics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10832-021-00265-4\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electroceramics","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10832-021-00265-4","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Fe-doping as a universal phase boundary shifter for BCZT ceramics across the morphotropic phase boundary
y mol% Fe-doped Ba(Zr0.2Ti0.8)O3—x mol%(Ba0.7Ca0.3)TiO3 (abbreviated as yFe:BCZTx) ferroelectric ceramics with y = 0, 0.375, 0.75, and 1.5 across the morphotropic phase boundary (MPB) with x = 44 and 56 were fabricated via conventional solid state reaction methods. Fe incorporated into the lattice and all the yFe:BCZTx ceramics showed pure perovskite structure. Fe-doping can significantly reduce the grain sizes and shift the tetragonal-cubic phase boundary toward lower temperature for all the investigated compositions across the MPB. A moderate enhancement of frequency dispersion on the dielectric constant was observed. The temperature dependent dielectric constant was analyzed according to modified Curie–Weiss law and the diffuse factor increased with increasing Fe-doping content. Relaxor-like slim polarization–electric field (P-E) loops were obtained for all BCZTx ceramics after Fe-doping. 1.5Fe:BCZTx ceramics shows almost hysteresis free P-E loops without obvious fatigue behavior after 10,000 cycles. The recoverable energy storage efficiency was significantly enhanced in 1.5Fe:BCZTx ceramics with good temperature stability. Our results indicate Fe-doping can be used as a universal phase boundary shifter and to increase energy storage efficiency for BCZT ceramics.
期刊介绍：
While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including:
-insulating to metallic and fast ion conductivity
-piezo-, ferro-, and pyro-electricity
-electro- and nonlinear optical properties
-feromagnetism.
When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice.
The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.
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